great as always keith, the level of detail is mind blowing, shading is out of this world, great dark underground atmosphere.

Thanks! The quality of the lighting and shadows can be attributed to not baking the light. UDK's baking systems is extremely ugly, and this is why games like Medal of Honor and Mirror's Edge used external lighting systems despite being made with the Unreal Engine. It's a shame that UDK isn't optimized to run dynamic light, but hopefully that'll change when the new consoles come out.

Here's video of the tunnel. The quality is very rough and choppy, but it's the best I could do with the video-capture software I used. I'll tinker around with it and try to get some better footage.